X0202 4 2008-05-05 0001289419 Morningstar, Inc. MORN 0001324069 Mansueto Joseph D C/O MORNINGSTAR, INC. 225 WEST WACKER DRIVE CHICAGO IL 60606 1 1 0 0 Chairman & CEO Common Stock 2008-05-05 4 S 0 100 74.92 D 27725399 D Common Stock 2008-05-05 4 S 0 100 74.63 D 27725299 D Common Stock 2008-05-05 4 S 0 100 74.76 D 27725199 D Common Stock 2008-05-05 4 S 0 100 74.90 D 27725099 D Common Stock 2008-05-05 4 S 0 100 74.82 D 27724999 D Common Stock 2008-05-05 4 S 0 100 74.77 D 27724899 D Common Stock 2008-05-05 4 S 0 100 72.71 D 27724799 D Common Stock 2008-05-05 4 S 0 100 73.97 D 27724699 D Common Stock 2008-05-05 4 S 0 100 73.75 D 27724599 D Common Stock 2008-05-05 4 S 0 100 73.73 D 27724499 D Common Stock 2008-05-05 4 S 0 100 73.23 D 27724399 D Common Stock 2008-05-05 4 S 0 100 73.60 D 27724299 D Common Stock 2008-05-05 4 S 0 100 73.65 D 27724199 D Common Stock 2008-05-05 4 S 0 100 73.51 D 27724099 D Common Stock 2008-05-05 4 S 0 100 73.95 D 27723999 D Common Stock 2008-05-05 4 S 0 100 73.81 D 27723899 D Common Stock 2008-05-05 4 S 0 100 74.00 D 27723799 D Common Stock 2008-05-05 4 S 0 300 74.79 D 27723499 D Common Stock 2008-05-05 4 S 0 100 75.10 D 27723399 D Common Stock 2008-05-05 4 S 0 100 75.01 D 27723299 D Common Stock 2008-05-05 4 S 0 200 74.86 D 27723099 D Common Stock 2008-05-05 4 S 0 300 75.00 D 27722799 D Common Stock 2008-05-05 4 S 0 100 75.31 D 27722699 D Common Stock 2008-05-05 4 S 0 200 75.06 D 27722499 D Common Stock 2008-05-05 4 S 0 300 74.93 D 27722199 D Common Stock 2008-05-05 4 S 0 100 74.82 D 27722099 D Common Stock 2008-05-05 4 S 0 200 74.91 D 27721899 D Common Stock 2008-05-05 4 S 0 100 74.63 D 27721799 D Common Stock 2008-05-05 4 S 0 200 74.87 D 27721599 D Common Stock 2008-05-05 4 S 0 178 75.13 D 27721421 D The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2007. Form 1 of 3 /s/ Heidi Miller, by power of attorney 2008-05-07